I installed on in my 2015 SVHO - like already said - no brainer and works like a champ - compared it to my garmin LMT1450 and speeds were spot on all the way to 67/68mph. IMO Yamaha should should include the unit in the package and eliminate the dopey and completely useless paddle-wheel design.

Switching to km/h is all fine. But that's not mph so what's the point of that. You wanna see mph not do the math to see what mph ur doing.

There is no math involved, you don't understand. You calibrate the unit while the cluster is in Kph mode to make it show the true MPH number, in other word the number you see is MPH. You just disregard the tiny Kph next to the big number.